I am trying to install a package from Bioconductor , it gives the following error 

Error in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]) : 
  there is no package called ‘VGAM’
Error: package or namespace load failed for ‘TPP’

what does it mean?

sessionInfo()
R version 3.3.3 (2017-03-06)
Platform: x86_64-apple-darwin13.4.0 (64-bit)
Running under: macOS Sierra 10.12.6

locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] tidyr_0.7.0          magrittr_1.5         dplyr_0.7.2          BiocInstaller_1.24.0

loaded via a namespace (and not attached):
 [1] Rcpp_0.12.12         bindr_0.1            BiocGenerics_0.20.0  munsell_0.4.3        colorspace_1.3-2     R6_2.2.2            
 [7] rlang_0.1.2          plyr_1.8.4           tools_3.3.3          parallel_3.3.3       grid_3.3.3           Biobase_2.34.0      
[13] gtable_0.2.0         lambda.r_1.1.9       futile.logger_1.4.3  lazyeval_0.2.0       assertthat_0.2.0     tibble_1.3.4        
[19] bindrcpp_0.2         gridExtra_2.2.1      purrr_0.2.3          ggplot2_2.2.1        futile.options_1.0.0 VennDiagram_1.6.17  
[25] glue_1.1.1           openxlsx_4.0.17      scales_0.5.0         pkgconfig_2.0.1  

I tried to install that package myself 

install.packages("VGAM")
Warning in install.packages :
  package ‘VGAM’ is not available (for R version 3.3.3) 

The problem is VGAM requires R >= 3.4.0 as shown on the CRAN page, but you are using R 3.3.3

Upgrade your version of R.